Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
CH & DHW temperature controls set to MAX (see note)
Ensure No demands
Note.
CH & DHW temperature controls must be set to MAX
otherwise boiler may enter combustion mode.
Ensure No demands
Note.
CH & DHW temperature controls must be set to MAX
otherwise boiler may enter combustion mode.
Observation:
To speed up fault finding it is recommended to cancel the purge cycle, the following procedure will need to followed every time power is re-instated to the boiler, it will be beneficial to remember this procedure.
1. Locate and open the closing plug on the PCB cover & remove plastic screw driver (see fig 1.). if plastic screw driver is missing, use a safe alternative.
2. Restore the electrical supply to the boiler.
Mains Power On
3. Allow 15 seconds to elapse before proceeding.
4. With access to the printed circuit board through closing plug, locate and press the CO button (SW1) once using the plastic screw driver (see fig 2. position SW1), replace screw driver for next time required / person.
5. Purge cycle will now be cancelled & boiler will enter standby, if a fault code
is present reset boiler as required or use fault code diagnosis click HERE.
1. Locate and open the closing plug on the PCB cover & remove plastic screw driver (see fig 1.). if plastic screw driver is missing, use a safe alternative.
2. Restore the electrical supply to the boiler.
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
3. Allow 15 seconds to elapse before proceeding.
4. With access to the printed circuit board through closing plug, locate and press the CO button (SW1) once using the plastic screw driver (see fig 2. position SW1), replace screw driver for next time required / person.
5. Purge cycle will now be cancelled & boiler will enter standby, if a fault code
is present reset boiler as required or use fault code diagnosis click HERE.
